Messed up intestine animation with lattice modifier
When using lattices, it's quite important to keep the outside undeformed where necessary. Ideally two rows of verts, not one. If you don't, the deformation will extend to infinity and beyond.



As you can see, the left lattice still deforms both cylinders.

The selected cylinder is almost but not completely untouched. Two rows are bullet proof though.

Hm, the end of that animation should yield interesting results.